Question

Из города выехал автомобиль со скоростью 87 км/ч. через 2 часа из этого же города в том же направлении выехал мотоциклист и догнал автобус через 4 часа. найди скорость мотоциклиста

Answer 1

Когда выехал мотоциклист автобус проехал 174 км,за 6 часа автобус проехал всего 522 км,значит мотоциклист за 4 часа проехал это расстояние,теперь 522/4=130,5км/ч
по идее надо решать уравнением но я забыл как))но с помощью этого можно составить уравнение,кто может в комментариях дополните

Answer 2

Problem Analysis

We are given that a car travels at a speed of 87 km/h and after 2 hours, a motorcyclist starts from the same city in the same direction and catches up to the car after 4 hours. We need to find the speed of the motorcyclist.

Solution

Let's assume the speed of the motorcyclist is x km/h.

The car travels for 2 hours at a speed of 87 km/h, so the distance covered by the car is 2 * 87 = 174 km.

The motorcyclist catches up to the car after 4 hours. During this time, the car has traveled for a total of 2 + 4 = 6 hours. The motorcyclist covers the same distance as the car in this time.

Therefore, we can set up the following equation to find the speed of the motorcyclist:

Distance covered by the motorcyclist = Distance covered by the car

x * 4 = 87 * 6

Simplifying the equation:

4x = 522

Dividing both sides by 4:

x = 130.5

Therefore, the speed of the motorcyclist is 130.5 km/h.

Answer

The speed of the motorcyclist is 130.5 km/h.